PR target/53976
	* config/sh/sh_optimize_sett_clrt.cc: New SH specific RTL pass.
	* config/sh/sh.c (register_sh_passes): Add sh_optimize_sett_clrt pass.
	* config/sh/sh/t-sh (sh_optimize_sett_clrt pass.o): New entry.
	* config.gcc (sh[123456789lbe]*-*-* | sh-*-*): Add
	sh_optimize_sett_clrt pass.o to	extra_objs.

	PR target/53976
	* gcc.target/sh/pr53976-1.c: New.

From-SVN: r205191